SCHNEIDER-KREUZNACH SUPER-ANGULON 75mm f/5.6 — Optical Cross-Section & Ray Tracing

Home / Lenses / Schneider-Kreuznach / SCHNEIDER-KREUZNACH SUPER-ANGULON 75mm f/5.6SCHNEIDER-KREUZNACH SUPER-ANGULON 75mm f/5.6US 3,376,091 TABLE I — WAGNER & MACHER / SCHNEIDER
8 ELEMENTS / 4 GROUPS
f ≈ 75.1 mm
F/5.6
2ω ≈ 100°
ALL SPHERICAL
Focus MechanismUnit focus — entire lens moves via view camera bellows or focusing rail. No internal focus mechanism.
Optical Elements (8)ElementTypeGlass
L1Negative MeniscusFK3 (Schott)
L2Negative MeniscusLaF3 (Schott 717479) / S-LAM3 optical equivalent
L3Biconvex Positive614551 — SSK-class dense barium crown (Schott historical; Hikari SK9 optical equivalent)
L4Biconcave Negative561453 — BaLF-class barium light flint (Schott historical; no exact public Sellmeier)
L5Biconcave NegativeBaK4 (Schott) / S-BAL14 optical equivalent
L6Biconvex Positive614563 — SSK-class dense barium crown (Schott historical; no exact public Sellmeier)
L7Negative MeniscusBaSF-class barium dense flint (Schott 702411; S-BAH27 / BAFD7 optical equivalent)
L8Negative MeniscusBK7G18 optical match (Schott 520636; K/BK crown class)
AnalysisDetailed analysis available in the interactive viewer above.

Element	Type	Glass
L1	Negative Meniscus	FK3 (Schott)
L2	Negative Meniscus	LaF3 (Schott 717479) / S-LAM3 optical equivalent
L3	Biconvex Positive	614551 — SSK-class dense barium crown (Schott historical; Hikari SK9 optical equivalent)
L4	Biconcave Negative	561453 — BaLF-class barium light flint (Schott historical; no exact public Sellmeier)
L5	Biconcave Negative	BaK4 (Schott) / S-BAL14 optical equivalent
L6	Biconvex Positive	614563 — SSK-class dense barium crown (Schott historical; no exact public Sellmeier)
L7	Negative Meniscus	BaSF-class barium dense flint (Schott 702411; S-BAH27 / BAFD7 optical equivalent)
L8	Negative Meniscus	BK7G18 optical match (Schott 520636; K/BK crown class)